Subaru Legacy 2003 Service Manual page 4006

Step
1 CHECK CRUISE CONTROL MAIN SWITCH
CIRCUIT.
1) Turn ignition switch OFF.
2) Disconnect cruise control main switch har-
ness connector.
3) Turn ignition switch ON.
4) Measure voltage between harness connec-
tor terminal and chassis ground.
Connector & terminal
(i19) No. 3 (+) — Chassis ground ( − − − − ):
Does the measured value exceed the spec-
ified value?
2 CHECK CRUISE CONTROL MAIN SWITCH
CIRCUIT.
1) Turn ignition switch OFF.
2) Disconnect cruise control module harness
connector.
3) Measure resistance between cruise control
module harness connector terminal and
cruise control main switch harness connec-
tor terminal.
Connector & terminal
(B94) No. 15 — (i19) No. 5:
(B94) No. 1 — (i19) No. 6:
(B94) No. 11 — (i19) No. 1:
Is the measured value less than the speci-
fied value?
3 CHECK CRUISE CONTROL MAIN SWITCH.
Remove and check cruise control main switch.
<Ref. to CC-7, Cruise Control Main Switch.>
Is cruise control main switch OK?
DIAGNOSTICS CHART WITH SYMPTOM
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Value
10 V
10 Ω
Cruise control main switch is
OK.
CC-17
Yes
Go to step 2. • Check fuse No.
18 (in fuse & relay
box).
• Check harness
for open or short
between cruise
control main
switch and fuse &
relay box.
Go to step 3. Repair harness.
Replace cruise Replace cruise
control module. control main
switch.
No